Best PDF Encryption Apps for iPhone of 2026

MobiPDF (formerly PDF Extra) is an intuitive reader and editor that allows you to read, edit, create, OCR, organize, annotate, fill and sign, convert, and share any PDF. This makes MobiPDF an excellent choice for users seeking a budget-friendly alternative to Adobe Acrobat Pro. HERE’S WHAT YOU GET WITH MOBIPDF: Multiple Page View Modes: Enjoy a distraction-free "Read Mode". Advanced Editing Tools: Experience a Word-like PDF editing environment. Two-Way Conversions: Convert PDFs to and from Word, Excel, PowerPoint, or image formats. OCR Support: Make scanned documents searchable. Markup Tools: Highlight, comment, strikethrough, stamp, and more to enhance your documents. Effortless PDF Organizer: Reorder, compress, split, and combine PDFs with ease. Sign & Secure: Add signatures, create and fill forms, and protect your PDFs with passwords, encryption, and digital certificates. Offline Mode: Work freely on your projects, even offline. Seamless translation: One-click translate any PDF into 50+ languages.

Foxit PDF Editor allows you to edit, view, create, organize, share, collaborate, secure, OCR, export and esign your PDF documents. Suitable for both SMBs and Enterprise, across desktop, mobile and web-whether you’re at the office, home or on the go. Affordable and easy to use with a low learning curve, which is perfect for remote workers and global companies, who can share, collaborate and provide feedback 24/7, anywhere in the world. Foxit PDF Editor is suited for individuals and groups who have to create, review, edit, manage, share and secure PDF documents. Foxit PDF Editor+ offers additional features, including editing, collaboration and security capabilities which are often required in larger sized companies.

Smallpdf, a Swiss company, is made in Switzerland, the land where watches, banks and clean design are all present. Smallpdf has won numerous awards for its innovative document management tools. Smallpdf was founded in 2013 and provides a simple, reliable, and secure solution to complex, awkward PDF software. Smallpdf is the most trusted and loved PDF software on the planet. It has served over 500 million users and 100,000 companies in 24 languages and in every country around the globe, including Antarctica. Smallpdf seamlessly integrates with professional and personal tasks, increasing productivity and simplifying how people manage their documents. With tools to compress, convert and edit, sign, protect and unlock PDF documents in just few steps,

PDF24 provides a range of user-friendly online tools for managing PDF files, developed by geek software GmbH, a German firm that has been operating since 2006. This platform offers complimentary solutions for various PDF-related challenges, both through downloadable software and web applications, including the popular PDF24 Creator and a suite of online tools. Despite being a compact team, the PDF24 staff is deeply committed to enhancing PDF solutions that benefit countless users globally. Their dedication has led to the successful launch of the PDF24 Creator and Online Tools, which have garnered millions of users worldwide. In addition to these tools, PDF24 also features PDF24 Fax, an online faxing service designed for those who wish to send and receive faxes without needing a physical fax machine. This commitment to innovation continues to make PDF24 a go-to resource for all things PDF.

The DRM-X 4.0 content protection system introduces an enhanced security framework along with sophisticated security functionalities. This platform allows for the secure distribution of protected content, including Audio/Video, PDF files, web pages, images, and JavaScript, across various devices such as Windows, Mac, iPhone/iPad, and Android. By utilizing DRM-X 4.0, you can effectively tackle the challenges of content delivery and sales that arise from piracy. Developed by Haihaisoft, this digital rights management solution operates as a service, offering comprehensive protection features. Key components of the DRM-X platform include File Encryption, Audio/Video Encryption, PDF Encryption, and HTML DRM Encryption, all integrated with advanced DRM capabilities. Users can easily manage their accounts, oversee groups, and adjust rights and license profiles online. As a next-generation DRM software platform built on the Xvast browser, DRM-X 4.0 supports both online and offline playback while enhancing the overall user experience. Additionally, it offers dynamic watermarking options for protected digital assets, ensuring a higher level of content security. This innovative approach aims to empower creators by providing them with the tools needed to safeguard their intellectual property effectively.